Star Sapphire and Norbergite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.90-4.05
3.177
Fracture
Not Available
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Cleavage
Not Available
{???} Distinct
Mohs Hardness
Not Available
6-6.5
Chemical Composition
Al 2O 3Ulrich Henn and Claudio C.
Mg 3(SiO 4)(F,OH) 2Anthony et al , Handbook of Mineralogy (2001)
Star Sapphire and Norbergite Chemical Formula
While comparing Star Sapphire and Norbergite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Star Sapphire and Norbergite chemical formula.
- Chemical formula of Star Sapphire- Al 2O 3Ulrich Henn and Claudio C.
- Chemical formula of Norbergite- Mg 3(SiO 4)(F,OH) 2Anthony et al , Handbook of Mineralogy (2001)
Star Sapphire and Norbergite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Star Sapphire and Norbergite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Star Sapphire and Norbergite Optical Properties during the identification of gemstone. Specific gravity of Star Sapphire is 3.177 whereas that of Norbergite is 3.177.